Calculate the lattice energy of calcium chloride given that the heat of sublimation of Ca is 121 kJ/mol and ¢H°f (CaCl2) 5 2795 kJ/mol.

You shake up a bottle of vinegar and oil dressing to mix it each time you use it. the reason you need to do this is that:

Define diffusion ...

This is for a microscope ... This part regulates the amount of light on the specimen

What do most logging methods have in common

Nitrogen (N) needs three more electrons to fill its outermost energy level. What is the number of electrons that Nitrogen (N) has in its outermost energy level before it forms a bond?

When a sample of gas is cooled, it condenses into a liquid. In which of the following ways do the molecules of the original gas sample compare with the molecules of the liquid? a. The molecules weigh less as a gas than they do as a liquid. b.

In a group 1 analysis, a student obtained a precipitate containing both AgCl and PbCh. Which of the following reagents would enable separation of AgCl (s) from PbCl (s) ? O Hys 0 Na2CO3 o KOH O NH3 O

Round to four significant figures 0.00238866

Gases are unique because it is the only phase that can be compressed can flow is composed of moving particles cannot be compressed

In a crystal lattice of an ionic compound, A. Kind of a given charge are clustered together B. Ions are surrounded by ions of the opposite charge C. A sea of electrons surrounds the ions D. Neutral molecules are present